Formic acid and formaldehyde destruction in waste streams

Details Formic acid and formaldehyde destruction in waste streams Formic acid and formaldehyde destruction in waste streams

1995-06-07

1997-02-25

Langel, Wayne

Organic compounds -- part of the class 532-570 series

Organic compounds

Phosphorus acids or salts thereof

210762, 210763, 210908, 423437R, C02F 168, C07F 928

Patent

active

056061072

ABSTRACT:
A process is provided for destroying formic acid and/or formaldehyde in an aqueous, organic acid waste stream by contacting the stream with a supported precious metal catalyst and passing air or molecular oxygen gas through the solution to promote chemical oxidation. The invention is a safe, practical and cost-effective alternative to bio-system treatment of these compounds using microorganisms. The process of the invention may be practiced in either a batch or continuous mode and, in accordance with the invention, formic acid present in a stream at a level of 3800 ppm and formaldehyde present in an amount of 5800 ppm can be reduced respectively to levels of 200 ppm or less.

REFERENCES:
patent: 3804756 (1974-04-01), Callahan et al.
patent: 4093543 (1978-06-01), Rodewald et al.
patent: 5205906 (1993-04-01), Grutsch et al.
patent: 5244581 (1993-09-01), Murphy
patent: 5460734 (1995-10-01), Birbara et al.

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